<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>HTML5 示例</title>
</head>
<body>
<h1>
title
</h1>
<p>
content1
</p>
<div style="border-top: 1px solid black; margin: 10px 0;"></div>
<div style="border-top: 1px solid black; margin: 10px 0;"></div>
<div style="border-top: 1px solid black; margin: 10px 0;"></div>
<p>
content2
</p>
</body>
</html>
